National Cerebral and Cardiovascular Center

Olympus Corporation

Fujikin Inc.

Fujikin Corporated

Masashi Inagaki

Masaru Sugimachi

Kenji Sunagawa

Kazuo Shimizu

Takeshi Arai

Masatoshi Kobayashi

Kazunori Uemura

Hiroyuki Imabayashi

An electrostimulation system includes a connector connected to an electrostimulation device, a conducting wire pair electrically connected to the connector, an electrical stimulation lead having a sheathing body configured to insulate the conducting wire pair and installed to be inserted into the vein, an electrical stimulus block portion installed at a leading end side of the electrical stimulation lead and having an electrode portion electrically connected to the conducting wire pair and a fixing block configured to bias the electrode portion to the inner wall of the vein, and a rotary member having an engaging groove detachably engaged with the electrical stimulus block portion and configured to rotate the electrical stimulus block portion disposed in the vein about a central axis of the vein disposed in the vein via the engaging groove.

Electrostimulation system, and electrostimulation electrode assembly and biological implantable electrode therefore

A practical method for estimating cardiac output and pulmonary artery wedge pressure with good accuracy is provided. A method is provided for estimating the impedance arising from solid tissue by determining the impedance at the intersection between the line of identity and the extrapolated regression line, where the regression line is obtained by linearly regressing the maximum value to the minimum value of the impedance signal of each of multiple data sets, where each data set contains the maximum value and the minimum value of the impedance signal during one cardiac cycle, where impedance signal is obtained between a can electrode implanted in the left thoracic wall and an electrode inserted into the coronary vein, over a specific period of time following the infusion of hypertonic saline into the pulmonary circulation.

Solid tissue impedance estimating method, cardiac output calculating method, pulmonary artery wedge pressure calculating method, cardiac output monitoring device, cardiac output monitoring system, pulmonary artery wedge pressure monitoring device, and pulmonary artery wedge pressure monitoring system

A micro integrated cardiac pacemaker includes a control unit for outputting a control signal according to cardiograph information, heart stimulating means for stimulating heart tissue in response to the control signal, cardiograph information extracting means for extracting cardiograph information and outputting it to the control unit, and a power supply unit for supplying drive power. The power supply unit is a biological fuel cell that takes out electrons by oxidation of a biological fuel. The biological fuel cell includes an anode and a cathode. An oxidase of a biological fuel and a mediator are immobilized on the cathode. Blood and/or body fluid are used as an electrolytic solution, and a biological fuel and oxygen in the blood and/or the fluid are used. The biological fuel cell is attached to the end of a catheter and implanted into the heart, and the catheter is withdrawn, without incising the breast.

Micro integrated cardiac pacemaker and distributed cardiac pacing system

A distributed cardiac pacing system comprises a first ultra miniature integrated cardiac pacemaker adapted to be placed in an atrial myocardium and a second ultra miniature integrated cardiac pacemaker adapted to be placed in a ventricular myocardium.

Cardiac pacing system and distributed cardiac pacing system

Growing community of inventors

Chiba, Japan

Masashi Inagaki